Things magazine has a nice gallery of 1960s Pelican paperback covers. The art is superb, and the books themselves sound interesting. I would like to own all of them!
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. His new book is Maker Dad: Lunch Box Guitars, Antigravity Jars, and 22 Other Incredibly Cool Father-Daughter DIY Projects